His The social passion, 1971.

Allen, J.S. Sun bright and well beloved, 1998: t.p. (Richard Allen) jkt. (graduate of Toronto, Saskatchewan and Duke Universities; currently chair of the Board of Wesley Urban Ministries)

LAC internal file, June 19, 2019 (variant: Allen, Alexander Richard, 1929-; Canadian; born 1929)

Wikipedia, viewed 3 April 2020: Richard Allen, Canadian politician (historian and politician in Ontario; born Richard Alexander Allen, February 10, 1929, Vancouver, British Columbia; earned a B.A. from the University of Toronto, a master's degree from the University of Saskatchewan, and a Ph.D. from Duke University; professor at the University of Regina from 1964 to 1974, where he founded the Canadian Plains Research Centre, and at McMaster University from 1974 to 1987; sat as a New Democratic Party member for Hamilton West of the Legislative Assembly of Ontario from 1982 to 1995, serving in cabinet from 1990 to 1995; died March 5, 2019, Hamilton, Ontario)